<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#float {
 float: right;
 width: 100px; height: 100px;
 background-color: blue;
}
#static {
 height: 20px;
 background-color: green;
}
#margin {
 height: 80px;
}
#clear {
 height: 20px;
 background-color: green;
}
</style>
</head>
<body>
<div id="float"></div>
<div id="static"></div>
<div id="margin"></div>
<div id="clear"></div>
</body>
</html>
